New Research Results and Validation on Real Data of the OSMOSIS Open-source Infrared Ship Signature Modeling Software

The need of Belgian Navy to model infrared signatures of all their vessels requires to develop a software for computing such signatures. The proposed software (OSMOSIS [1]) can efficiently compute these signatures for a large database of ship geometries. This paper first discusses the recent novel research results included in OSMOSIS in order to make it applicable to more realistic scenario’s and to increase the accuracy of the simulations. This mainly includes the following topics. (1) An efficient numerical modeling of the “in-depth” 1D thermal conduction. This model can handle layered materials. (2) An efficient model for including the effect of the ground (sea) surface on the vessel surface temperatures. (3) A significant enhancement of the optimized shadow volume method described in [2]. (4) The ability of OSMOSIS to manage non-planar, non-polygonal surfaces. This widens the application of OSMOSIS to more general vessels geometries. The second part of the paper presents preliminary results of the validation of OSMOSIS on the SAPPHIRE data set obtained from the TG51 NATO research group.